Folding roll for paper-folding machines



May 1, 1928.

.EzzYentor. Henry A.Wz"sc Wod,

Original Filed Aug; 8. 1922 Patented May 1, 1928.

entree STATES mews PATENT OFFICE.-

HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR '10 WOOD NEWSPAPER MA OHINERY CORPORATION, OF'NEW YORK, N. Y., A CORPORATION OF VIRGINIA.

FOLDING ROLL FOR PAPER-FOLDING MACHINES.

Application filed August 8, 1922, Serial No. 580,438. Renewed September 27, 1926.

This invention relates to a folding machine which is designed for folding the highly illustrated products from newspaper or periodical rotary presses.

The principal objects of the invention areto provide the folding rolls with means for preventing the smudging of the outside of the product and for preventing thepress-r Fig. 1 is a diagrammatic view of a foldershowing a preferred form of this invention applied thereto; 1

g. 2 is a plan of the pair of folding rolls, parts being broken away to show interior construction;

Fig. 3 is an end view of the same;

Fig. 4 is a sectional view on the line 4-4 of Fig. 2; I

Fig. 5 is an end view of one of the end mzilrgin 1 rings or nips removed from the 1'0 v gig-'6 is a side view of one of the rolls; an v Fig. 7 is a view of a printed and folded product for which this invention is designed tobeused. a

In the folding of the highly illustrated products of newspaper or pe'riodicalrotary 40 ink to dry, the products are invariably smeared or smudged with ink. This 1s caused by the fact that the products are folded between two rolls which bear. upon the printed surface of the paper throughpresses, where there 'is little time for the ways'occur at the same spot or spots the paper.

This invention is designed for providing a practical means for folding such products by contact with the longitudinal and transverse margins only and preventing the pressure of the rolls against the inked parts of the products. This also, of course, prevents turn prints it back'on the next following paper. The margins A-and B are indicated in this figure and also an arrow is shown to indicate the direction of motion through the folding rolls. d

The web which is to be folded to produce the product shown in Fig.7 passes, as usual,

through the former, the nipp ng, rolls, be.

tween the foldin cylinder 10 and cutting cylinder 11, and t en between a pair of fold ing rolls 12. These rolls preferably aresized and timed, as has been done heretofore, so as to make a single complete'revolu- 'tion during the exact. period of time required for the, passage of a complete prodnot through them, but the meansfor securing this result is not'shown herein. These rolls are adjustable toward .and from each other, and are'set sulficiently far apart so that their normal cylindrical surfaces ,do not bear hard upon the sheet. In fact they do not bear upon it, sufliciently to feed the sheet by theirown action at the-"speed of the rolls. Y One or both of these rolls carries a margin folding block '13. This, in each case, ex-

tends along the roll and has a convex surface preferabl scored slightly or roughened 09 sufficient to orm a good feeding surface a curvature concentric to that on which it is carried. These and havin of the ro blocks are mounted" in radial recesses extending from one end of each. roll to the 1 other and each. one is shown as having an enlargement 14 at the rear to engage a should er on this recess,- and prevent the block from being displaced in a' radial direction.

materially larger'than the stud or shaft 24 ing them out in their outermost position so as .to contact with each other once dur ingeach revolution. It is not absolutely essential that both of these blocks havesprings behind them,but one of them should. These blocks are so placed asto coincide with the .folder without displacin same is true of thefolding blocks 13. Therefore products of greatly varying thicknesses the rest of the machine. On account of, the

resilient mounting of these collars they can be displaced'slightly in the operation of the the roll. The

can be folded by this machine without adjustments and without; causing any particu' .lar strain especially on the bearings of the margin A of the sheet which they areaosfolding rolls. It'will be seen, therefore, that fold. Therefore, as they come aroundinto contact with this margin theywill feed the sheet forward positively, but will not take *npkany ink. The foldratlhe back of the.

sheet wilt'befirmly and sharplycreased by the pressure of these blocks. After these 'uct along. Then the rolls are out of contact. with :the parts ofthe sheet between the two'margmslA-"and not constituting a part- Of the tOpand bottom margins B so that these parts will not be on byv the blocks;

The side margin folding blocks above described do not'act constantly on the sheet. For the purpose of providing means that vwill always engage" the sheet and feed it along constantly, I have provided each end of the roll with apair of studs 20. On each stud is placed'a' rubber thimble 21 surrounding it and constituting a spring or buffer. Mounted onthese thimbles at eachend of the folding rollsare nipping collars 22. Each'of these collars 22 has two opposite perforations through it, fitting the rubber thimbles 21 and it has a centralopening 23 pressed by these rolls of the folding roll to permit of play. The

. nuts and washers on the ends of the studs 20 fits-freely enough so that the collar can move sui'ficie'ntly to give itfree play. It will be noted that the collars are 10- c-ated"-,on the ends 'and in fact'beyond' the ends of the rolls and are held against the ends instead of being locatedo'n the circum ference. The rubber thimbles allow the collar to-yi'eld'in all directions in a transverse plane about the studs 20. In this way the means for holding the collar on itself acts to preventcreeping of the collars circumferentially.

The exterior cylindrical surfaces of these I nippingcollar's' are milled to provide a: good gripping surface for feeding the paper. These nipping collars are-solocated and of such .width that they constantly contact-with the margins B of the product, and feed the product along by that contact. On account of their being mounted on the rubber springs and of the play which they have,-they hear sufliciently against each other at the .two ends u of thefolding rolls to hold the product posi;

-tively betweenfthe folding rolls after the foldmg blocks 13. have pamih so that the product is kept 1n mot on and n with the printtihshects or folded "produetswan.

be folded by'thisheans in a quick and neat' manner without danger of smearing the out side sheets or smutting the insidfsurfaces on account of the freshly inked parts being pressed together by the folding rolls yet the 'oi-"delivered in any other desired way.

Although I have illustrated and described only a single form ,of the invention, I am blocks have acted they pass the printedaniode.-foldingis-doneaccurately'and efficiently and a the products kept in time with the apparatus aware of the fact that modifications can be I made therein by any person skilled in the art Without departing from the scope of the invention as expressed in the claims.

Therefore I do not Wish to be limited to all the details of construction herein shown and described, but what I do claim is 1. A folding. and forwarding roll having a collar thereon of slightly larger diameter.

thanthe roll to nip the product, and means for holding the collar at a plurality of points and allowing it to yield slightly and equally roughened operative surfaces adapted to engage thesheets atpredetermined points and pr'essthe sheets together at those points, and means for yieldingly forcing one of said blocks toward the other.

3,. Th'ecombination with a pair of folding rolls of a diameter less than that required to,

cause their surfaces to press against :the sheets to be folded, with spring-pressed longitudinal blocks carried by said rolls profleeting from-said surfaces, saidblocks hav-' ing cylindrical exterior surfaces concentric with their respective rolls for engagin the.

sheets and pressing them together, the b ocks 'on the two rolls registering with each other.

4. The combination with a' folding roll having a spring-pressed folding block ex.- v

tendin longitudinally thereoffor engaging t esi' e m rgms of he f lde sheets, l h

yielding means at the ends .of said roll for constantly pressing on the topand bottom margins and while the folded products are being fed forward at all times while the roll is rotated.

-5. In a' foldingmachine, the combination with afoldingroll, of means connected with i said roll for forwarding a doubled printed product between it and its complementary roll and folding it without placing any printed part of the printed product under pressure, comprising .a collar on the end of the roll and means for allowing the collar to yield equally in all directions in a transverse gins of the printed product and forwarding 1t positively with the rolls and means mountedon the ends of the rolls for allowing the paper engaging means to 'eld to permit of operation on products 0 different thicknesses. V

7. The combination with a pair offolding studs, and an end margin nipping rolls, of a pair of margin nip ing collars at the ends of said rolls, and y elding means for supporting said collars against the flat ends of the rolls, whereby they will press on a single sheet carried between the rolls sufficiently to feed it forward or will yield to permit a thick folded product to pass between the rolls. 1

8. As an article of manufacture a foldin roll provided at the end thereof with an en margin nippin collar mounted on the roll to yield 'in all irections.

9. As an article of manufacture, a folding roll having on the end asoft rubber thimble, and an end margin nipping collar having a perforation for receiving said thimble and capable of yielding a short distance.

10. As an article of manufacture, ing roll having on the end thereof a pair of studs, soft rubber thimbles surrounding said collar havin two perforations for receivmg said a foldthimb es and capable of moving a. short distance in all directions transverse to the axis of the roll.

In testimony whereof fixed my signature;

HENRY a. wise woon;

I have hereunto af-' 

